[  499.930478] bond0: (slave eth0): making interface the new active one
[  499.930569] bond0: (slave eth0): Enslaving as an active interface with an up link
[  504.150657] bond0: (slave eth0): Releasing backup interface
[  504.233161] bond0: (slave eth0): Enslaving as an active interface with an up link
[  508.372466] bond0: (slave eth0): Releasing backup interface
[  508.402381] bond0 (unregistering): Released all slaves